Roller blade of rotation type

ABSTRACT

A roller blade of rotation type is disclosed. The present invention provides a roller blade of rotation type which can be used as general shoes by rotating wheel mounting members with the operation of a rotation lever when a user of the roller blade should go up/down the stairs, or go across a crosswalk or an unpaved street and can be used again as a roller blade by rotating the wheel mounting members in a reverse direction after crossing the street. The roller blade having a boot according to the present invention has a frame combined to a sole of the boot; a rotation axle formed at the lower portion of the frame; wheel mounting members combined to both ends of the rotation axle; and a frame supporting member combined to the lower surface of the frame with maintaining a predetermined distance from the lower portion of the rotation axle.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates to a roller blade of rotation type and more particularly, to a roller blade of rotation type which can be used as general shoes by rotating wheel mounting members with the operation of a rotation lever when a user of the roller blade should go up/down the stairs, or go across a crosswalk or an unpaved street and can be used again as a roller blade by rotating the wheel mounting members in a reverse direction after crossing the street.

[0003] 2. Background of the Related Art

[0004] Typically, with a formal name of an in-line skate, a roller blade has a plurality of wheels arranged in tandem unlike a conventional roller skate, such that a use

of the roller blade can run in a high speed and perform various feats.

[0005] However, it has a problem that in order to go up/down the stairs or go across a crosswalk or an unpaved street, a user of a conventional roller blade should keep additional shoes and change shoes when necessary.

SUMMARY OF THE INVENTION

[0006] Accordingly, the present invention is directed to a roller blade of rotation type that substantially obviates one or more problems due to limitations and disadvantages of the related art.

[0007] An object of the present invention is to provide a roller blade of rotation type which can be used as general shoes by rotating wheel mounting members with the operation of a rotation lever when a user of the roller blade should go up/down the stairs, or go across a crosswalk or an unpaved street and can be used again as a roller blade by rotating the wheel mounting members in a reverse direction after crossing the street.

[0008] To achieve the above object and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, a roller blade of rotation type having a boot comprises a frame combined to a sole of the boot, a rotation axle formed at the lower portion of the frame, wheel mounting members combined to both ends of the rotation axle, and a frame supporting member combined to a lower surface of the frame with maintaining a predetermined distance from a lower portion of the rotation axle.

[0009] In addition, wheel mounting member attaching plates for walking are respectively attached to the same sides of the wheel mounting members. That is, if one of the wheel mounting member attaching plates for walking is placed at a left side of one of the wheel mounting members, the other wheel mounting member attaching plate for walking is also placed at a left side of the other wheel mounting member. And a base plate for walking is attached to the lower surface of the frame supporting member.

[0010] Additionally, the frame has a boot supporting plate combined to a sole of the boot; a rotation axle fixing stand formed to be projected at the lower center of the boot supporting plate; torsion spring supporting members which are fixed to the lower surface of the boot supporting plate such that one is placed at an opposing side to the other centering around the rotation axle fixing stand with a predetermined distance; rotation axle supporting rings respectively combined to the lower surfaces of the torsion spring supporting members; a rotation lever torsion spring formed at the rear side of the rotation axle fixing stand to be inserted to a bolt which passes through the boot supporting plate; and a rotation lever combined at the lower portion of the rotation lever torsion spring by a nut.

[0011] One end of the rotation lever torsion spring is supported by the rotation lever and the other end thereof is supported by the torsion spring supporting member.

[0012] Further, the rotation axle has a rotation axle projection which perpendicularly passes through the circumference of the rotation axle and is bent in one direction; rotation axle torsion springs which are respectively inserted to the inner sides of the rotation axle supporting rings through both ends of the rotation axle, the torsion spring supporting members supporting one ends of the rotation axle torsion springs; and rotation axle torsion spring supporting screws which are respectively fixed to the inner circumferences of the rotation axle torsion springs and support the other ends of the rotation axle torsion springs.

[0013] The rotation lever is designed to operate in a reverse direction of the processing direction of the wheel.

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principle of the invention. In the drawings;

[0015]FIG. 1 is a side view showing one side of a roller blade of rotation type according to the present invention;

[0016]FIG. 2 is a side view showing the wheel state when a rotation lever of the roller blade of rotation type according to the present invention is operated; and

[0017] FIG.3 is an exploded view showing the lower portion of a frame of the roller blade of rotation type according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0018] A preferred embodiment of the present invention will be made in detail with reference to the accompanying drawings.

[0019]FIG. 1 is a side view showing a roller blade of rotation type according to the present invention, FIG. 2 is a side view showing the wheel state when a rotation lever of the roller blade of rotation type according to the present invention is operated, and FIG. 3 is an exploded view showing the lower portion of a frame of the roller blade of rotation type according to the present invention.

[0020] As shown in the figures, the present invention comprises a boot 10, a frame 20, a rotation axle 30, wheel mounting members 40 a and 40 b, wheels 50 a and 50 b, a brake 60 and a frame supporting member 70.

[0021] The frame 20 has a boot supporting plate 21, a rotation axle fixing stand 22, torsion spring supporting members 23 a and 23 b, rotation axle supporting rings 24 a and 24 b, a rotation lever torsion spring 25 and a rotation lever 26.

[0022] The boot supporting plate 21 is secured to a sole of the boot 10 by a plurality of bolts and nuts to support the boot 10, and the rotation axle fixing stand 22 is formed at the lower center of the boot supporting plate 21 to be projected by a predetermined height.

[0023] The torsion spring supporting members 23 a and 23 b are fixed at the lower surface of the boot supporting plate 21 such that one is placed at an opposing side to the other centering around the rotation axle fixing stand 22 with a predetermined distance, and the rotation axle supporting rings 24 a and 24 b are respectively attached at the lower surfaces of the torsion spring supporting members 23 a and 23 b.

[0024] The rotation lever torsion spring 25 is formed at the rear side of the rotation axle fixing stand 22 to be inserted to a bolt which passes from the upper surface of the boot supporting plate 21 to the lower surface thereof and sequentially, the rotation lever 26 is inserted to the lower surface of the rotation lever torsion spring 25 and then is fixed by a nut.

[0025] Here, one end of the rotation lever torsion spring 25 is supported by the torsion spring supporting member 23 a and the other end thereof is supported by the rotation lever 26.

[0026] The rotation axle 30 is inserted to the rotation axle supporting rings 24 a and 24 b such that both ends thereof are projected by a predetermined length, and the rotation axle 30 has a rotation axle projection 31, rotation axle torsion springs 32 a and 32 b and rotation axle torsion spring supporting screws 33 a and 33 b.

[0027] Firstly, the rotation axle projection 31 perpendicularly passes through the circumference of the rotation axle 30 and then is bent by 90° in one direction. The rotation axle torsion springs 32 a and 32 b are respectively inserted to the inner sides of the rotation axle supporting rings 24 a and 24 b through both ends of the rotation axle 30, one ends thereof being supported by the torsion spring supporting members 23 a and 23 b and the other ends thereof being supported by the rotation axle torsion spring supporting screws 33 a and 33 b fixed to the inner circumferences of the rotation axle torsion springs 32 a and 32 b.

[0028] The wheel mounting members 40 a and 40 b are of “U” shape and are respectively fixed to both ends of the rotation axle 30 to be symmetrical to each other with the frame supporting member 70 in the center. The wheel mounting member attaching plates for walking 41 a and 41 b attached at the same sides of the wheel mounting members 40 a and 40 b and the wheels 50 a and 50 b formed at the inner space of the wheel mounting members 40 a and 40 b are fixed by bolts passing through both sides of the wheel mounting members 40 a and 40 b.

[0029] The brake 60 is fixed at the open end of the wheel mounting member 40 b by a bolt and a nut.

[0030] The frame supporting member 70 has a base plate 71, frame supporting stands 72 a, 72 b, 72 c and 72 d and a base plate for walking 73.

[0031] The base plate 71 is rectangular in configuration with a predetermined thickness and is integrally formed with the frame supporting stands 72 a, 72 b, 72 c and 72 d. One ends of the frame supporting stands 72 a, 72 b, 72 c and 72 d are combined to the lower surface of the boot supporting plate 21 to be contact with the torsion spring supporting members 23 a and 23 b and the base plate for walking 73 is attached to the lower surface of the base plate 71.

[0032] The operation of the present invention as described above will now be described in detail.

[0033] Firstly, in the case that a user of a roller blade operates a rotation lever 26 in a forward direction to safely go up/down the stairs or go across a crosswalk or an unpaved street, the rotation axle projection 31 fixed to the rotation axle fixing stand 22 by the rotation lever 26 is released to rotate the rotation axle 30 by 90°. At the same time, the wheel mounting members 40 a and 40 b fixed to both ends of the rotation axle 30 are rotated, and the wheel mounting member attaching plates for walking 41 a and 41 b respectively attached at the same sides of the wheel mounting members 40 a and 40 b become placed on the same plane as the base plate for walking 73, thereby enabling the safe walking of the user.

[0034] In addition, in the case that the user rotates the brake 60 by 90° in a reverse direction to ride the roller blade again after crossing the street, the rotation axle projection 31 glidingly contacts with the side of the rotation lever 26 to be raised, and the rotation lever 26 moves in a forward direction. If the rotation axle projection 31 closely contacts with the rotation axle fixing stand 22, the rotation lever 26 fixes the rotation axle projection 31, thereby enabling the user to maintain the original state.

[0035] The forgoing embodiments are merely exemplary and are not to be construed as limiting the present invention. The present teachings can be readily applied to other types of apparatuses. The description of the present invention is intended to be illustrative, and not to limit the scope of the claims. Many alternatives, modifications, and variations will be apparent to those skilled in the art.

[0036] As described above, according to the roller blade of rotation type of the present invention, a user of the roller blade can change the roller blade to shoes by rotating the wheel mounting members with a simple operation of the rotation lever, thereby enabling the user to safely go up/down the stairs or go across a crosswalk or an unpaved street without preparing additional shoes. 

What is claimed is:
 1. A roller blade of rotation type having a boot, comprising: a frame combined to a sole of said boot; a rotation axle formed at the lower portion of said frame; wheel mounting members combined to both ends of said rotation axle; and a frame supporting member combined to the lower surface of said frame with maintaining a predetermined distance from the lower portion of said rotation axle.
 2. The roller blade of rotation type as claimed in claim 1, wherein wheel mounting member attaching plates for walking are respectively attached at the same sides of said wheel mounting members.
 3. The roller blade of rotation type as claimed in claim 1, wherein a base plate for walking is attached at the lower surface of said frame supporting member.
 4. The roller blade of rotation type as claimed in claim 1, wherein said frame comprises a boot supporting plate combined to the sole of said boot; a rotation axle fixing stand which is formed to be projected at the lower center of said boot supporting plate; torsion spring supporting members which are fixed to the lower surface of said boot supporting plate such that one is placed at an opposing side to the other centering around said rotation axle fixing stand with a predetermined distance; rotation axle supporting rings respectively combined to the lower surfaces of said torsion spring supporting members; a rotation lever torsion spring formed at the rear side of said rotation axle fixing stand to be inserted to a bolt which passes through said boot supporting plate; and a rotation lever combined at the lower portion of said rotation lever torsion spring by a nut.
 5. The roller blade of rotation type as claimed in claim 4, wherein said rotation lever torsion spring has one end supported by said rotation lever and the other end supported by said torsion spring supporting member.
 6. The roller blade of rotation type as claimed in claim 4, wherein said rotation axle comprises a rotation axle projection which perpendicularly passes through the circumference of said rotation axle 30 and is bent in one direction; rotation axle torsion springs respectively inserted to the inner sides of said rotation axle supporting rings through both ends of said rotation axle, said torsion spring supporting members supporting one ends of said rotation axle torsion springs; and rotation axle torsion spring supporting screws which are respectively fixed at the inner circumferences of said rotation axle torsion springs and support the other ends of said rotation axle torsion springs.
 7. The roller blade of rotation type as claimed in claim 4, wherein said rotation lever is designed to operate in a reverse direction of the processing direction of a wheel. 